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Fabrication of a wax ear by rapid-process modeling using stereolithography.
Int J Prosthodont. 1999 Jan-Feb; 12(1):20-7.IJ

Abstract

PURPOSE

The purpose of this article is to describe an automated technique that creates a mirror-image wax model of the contralateral ear using a rapid prototyping technique, which allows precise positioning and adaptation to the deficient side of the face.

MATERIALS AND METHODS

Magnetic resonance images (MRI) are taken of the face and then digitized and reformatted into a 3-dimensional image. The image of the normal ear is extracted, mirrored, and positioned onto the image of the deformed side of the face. The digitized data, when used in conjunction with stereolithography, produces a photopolymerized resin model ear. A model wax ear is created by pouring molten wax into a silicone mold of the resin model ear.

RESULTS

A model wax ear of identical dimensions, shape, and internal contouring as the contralateral normal ear is created. The technique allows the undersurface of the model wax ear to be precisely positioned against the surface contours of the deformed side of the face in 1 patient.

CONCLUSION

The use of stereolithography from MRI scan data is a suitable technique for producing a model wax ear that fits the deformed side of the face. The 3-dimensional computer image of the face may also be used to plan the position (level and protrusion) of the ear.

Authors+Show Affiliations

Coward TJ
Department of Prosthetic Dentistry, King's Dental Institute, London, United Kingdom. trevor.coward@kcl.ac.uk
Watson RM
No affiliation info available
Wilkinson IC
No affiliation info available

MeSH

Computer-Aided DesignEar, ExternalHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingProstheses and ImplantsProsthesis DesignWaxes

Pub Type(s)

Journal Article

Language

eng

PubMed ID

10196824

Citation

Coward, T J., et al. "Fabrication of a Wax Ear By Rapid-process Modeling Using Stereolithography." The International Journal of Prosthodontics, vol. 12, no. 1, 1999, pp. 20-7.
Coward TJ, Watson RM, Wilkinson IC. Fabrication of a wax ear by rapid-process modeling using stereolithography. Int J Prosthodont. 1999;12(1):20-7.
Coward, T. J., Watson, R. M., & Wilkinson, I. C. (1999). Fabrication of a wax ear by rapid-process modeling using stereolithography. The International Journal of Prosthodontics, 12(1), 20-7.
Coward TJ, Watson RM, Wilkinson IC. Fabrication of a Wax Ear By Rapid-process Modeling Using Stereolithography. Int J Prosthodont. 1999 Jan-Feb;12(1):20-7. PubMed PMID: 10196824.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fabrication of a wax ear by rapid-process modeling using stereolithography. AU - Coward,T J, AU - Watson,R M, AU - Wilkinson,I C, PY - 1999/4/10/pubmed PY - 1999/4/10/medline PY - 1999/4/10/entrez SP - 20 EP - 7 JF - The International journal of prosthodontics JO - Int J Prosthodont VL - 12 IS - 1 N2 - PURPOSE: The purpose of this article is to describe an automated technique that creates a mirror-image wax model of the contralateral ear using a rapid prototyping technique, which allows precise positioning and adaptation to the deficient side of the face. MATERIALS AND METHODS: Magnetic resonance images (MRI) are taken of the face and then digitized and reformatted into a 3-dimensional image. The image of the normal ear is extracted, mirrored, and positioned onto the image of the deformed side of the face. The digitized data, when used in conjunction with stereolithography, produces a photopolymerized resin model ear. A model wax ear is created by pouring molten wax into a silicone mold of the resin model ear. RESULTS: A model wax ear of identical dimensions, shape, and internal contouring as the contralateral normal ear is created. The technique allows the undersurface of the model wax ear to be precisely positioned against the surface contours of the deformed side of the face in 1 patient. CONCLUSION: The use of stereolithography from MRI scan data is a suitable technique for producing a model wax ear that fits the deformed side of the face. The 3-dimensional computer image of the face may also be used to plan the position (level and protrusion) of the ear. SN - 0893-2174 UR - https://www.unboundmedicine.com/medline/citation/10196824/Fabrication_of_a_wax_ear_by_rapid_process_modeling_using_stereolithography_ DB - PRIME DP - Unbound Medicine ER -